Question about 2001 Hyundai Sonata

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Sputtering 2001 Hyundai sonata 4cyl, 193,000 miles

On the way home from the city last night my '01 sonata started sputtering significantly. At first it was while pushing up past about 40-45 mph, then it smoothed out at higher speeds only to kick in again after slowing for ramps, traffic, etc. it also sputtered heavily at a red light and slightly less so in the driveway. It seems mostly restricted to lower rpms but I'm not 100% sure. I've had the timing belt done twice since I bought her at 101k miles (actually bought from family, so replaced it with shared expense first time), so I don't THINK that's a potential cause (2nd time was somewhere around 170 k I think). What can be done to remedy this? Hoping to nudge her up past 200k before starting to think of replacing her.

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Posted on Jan 02, 2017

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SOURCE: Car reving up and down on its own 3 to 4 times, then sputtering and dying?

The previous solution to check the idle air contol is in the correct area but needs some clarification.
The idle control is accomplished by two parts: Throttle position sensor ( $35 at Autozone) and idle contol valve approx $190. I replaced the throttle position sensor about a week ago and it runs perfect
to date but am a skeptic after almost two years of dealer incompetance. I researched all the sensors and failure symptoms on the internet and the throttle position sensor failure symptoms matched mine
exactly. See _Position_Sensor

Posted on Dec 04, 2008

66 chrgr
  • 1011 Answers

SOURCE: 2001 Hyundai XG-300 witn 86,000

i have run into this before. the mass air flow sensor is contaminaited take it out clean it with parts cleaner on the element first if this doe not fix it replace it. thank you

Posted on Jan 26, 2009

  • 20 Answers

SOURCE: My 2004 Hyundai Sonata quit on the freeway 65mph timing belt had

You have to have your timing set around Top Dead Center .. use a timing light.. 9 deg before TDC

Posted on Jul 07, 2009

  • 1280 Answers

SOURCE: Elantra Timing Belt off by one tooth

The timing system is very precise regarding fuel trims (fuel map). If the timing is, in fact, one tooth off, I'm surprised you haven't had a 'Check Engine' light with the DTC of P0016 - Crank position to Cam position Correlation and P0010 Camshaft Position-Timing Over-Advanced or System Performance(Bank 1). This condition will definitely affect fuel efficiency - no doubt about it. You can verify this by checking the ECU fuel trim data adaptives (OBDII scanner) - they should be near 100% (or zero '0.0'). You might also get a P0171 or P0172 - System too Lean or Rich.

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Posted on Sep 07, 2009

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SOURCE: installing timing belt in 2001 hyundai sonata 6

This should help.

Posted on Sep 07, 2009

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